Dual USB 3.0 for 10x faster file transfer and 2x faster phone/tablet chargingFront mesh panel and air vents for optimized coolingSupports up to three 120mm fans (2 pre-installed), including one 120mm red LED fan in the frontSide panel with fan mounting to cool the VGAs (KKN1)Large side panel window (KWN1)Supports high-end graphics cards up to 315mm / 12.4 inch longSupports up to 7 HDDs for great expandability